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Temgo 12V 300Ah Lithium Battery with Bluetooth APP for RVs &Trailers, Trolling Motors, Campers, motorhomes, Off Grid

SKU: TM-12V-300AH-MINI
6 reviews
$531.99

    Lightweight Design: Weighing only 54.67 lbs, this 3840Wh battery is 1/3 the weight of same-capacity lead-acid batteries. Equal power at a lighter weight, for easy installation and space-saving layout.

    High Power Output: Equipped with a 200A BMS, supports continuous 2560W output, powering inverters and various appliances efficiently for daily use.

    Smart Monitoring: Features a built-in LCD screen and Bluetooth for real-time battery status monitoring, allowing on-site checks via the screen and remote oversight via the Temgo App for ultimate convenience.

    Rugged Outdoor Protection: IP65 waterproof rating and low-temp cutoff function ensure reliable performance in tough outdoor conditions, protecting the battery from damage.

    Expandable & Long-Lasting: Supports flexible expansion up to 10 batteries in parallel or 4 in series (Max 4P4S) for scalable energy systems, paired with 5000+ cycles for long-term power builds to meet diverse power demands.

    Reliable After-Sales Support: Accessible 24/7 online service. Get 5-year technical support whenever you have questions about installation and operation.
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Services and Benefits

Local Warehouse Free Shipping

Free standard shipping on all orders.

Estimated delivery within 2–5 business days.

Excludes Hawaii (HI), Alaska (AK), and Puerto Rico (PR).

Free Returns

30 Days Hassle Free Returns

5 Years Lifespan

Backed up by technical support within 24hrs.
Description Specifications Reviews FAQs

Optimized for Low-Temperature Use

Frustrated with batteries that won’t charge in freezing weather? Temgo’s self-heating LiFePO4 battery solves that: when the temperature drops below 0°C, it automatically heats itself to 5°C before charging starts. This helps protect the cells from low-temperature charging damage and ensures efficient charging even in winter. So you can recharge your RV or boat battery confidently in subzero conditions, with the battery automatically warming up before charging—no manual warm-up required.

Temgo 12V 300Ah lithium battery with capacity of 3840Wh and 10-year long service life

Temgo 12V 300Ah lithium battery with capacity of 3840Wh and 10-year long service life

Multiple Ways to Keep Your Battery Charged

AC power isn’t always available, especially when you’re on the road or off-grid. With Temgo’s LiFePO4 battery, you can recharge using a battery charger, solar system, or generator—giving you more flexibility to keep your battery powered wherever you are.

Temgo 12V 300Ah lithium battery built-in 200A BMS and low temperature protection

12V 300Ah Heated LiFePO4 Battery Multiple Charging Methods

Intelligent Monitoring

The Temgo battery integrates convenient smart monitoring functions for effortless power management. Simply scan the onboard QR code to complete instant Bluetooth pairing. Real-time data including voltage, current, remaining capacity and temperature is clearly displayed on the built-in Touchscreen and Temgo App. You can keep track of battery operating status at any time and quickly identify overload, overheating and other abnormal conditions for worry-free power use.

Temgo 12V 300Ah lithium battery touch LCD screen and app monitoring

Temgo 12V 300Ah lithium battery touch LCD screen and app monitoring

Flexible Capacity Expansion

Start with the capacity you need and expand as your power demands grow. Temgo’s LiFePO4 battery system supports up to 4S4P connections, allowing multiple batteries to be combined for greater energy storage and power output. Build your system step by step and enjoy the flexibility to scale up for RVs, off-grid power, backup energy, and other high-demand applications.

12V 300Ah heated LiFePO4 battery with flexible capacity expansion up to 4S4P

12V 300Ah heated LiFePO4 battery with flexible capacity expansion up

Versatile Power For RV, Marine, Solar backup, Off-grid storage

Built with 12V 300Ah / 3840Wh large capacity and 2560W continuous high-power output, this Temgo LiFePO4 battery handles all heavy-duty power loads with ease. It delivers consistent, reliable power for home backup storage, RVs, yachts, fishing expeditions, off-grid solar setups. It stably supports refrigerators, lighting and various daily electronics, fully meeting long-duration power demands.

Temgo 12V 300Ah lithium battery for RVs, marine, home backup and off grid solar storage

Temgo 12V 300Ah lithium battery for RVs, marine, home backup and off grid solar storage
Specifications
    Dimensions & Weight 15.12L*7.64W*9.76H inches /54.67 lbs
    Capacity 300 Ah
    Nominal Voltage 12.8 V
    Energy 3840 Wh
    Recommended Charge Voltage 14.2V - 14.6V
    Recommended Charge Current 60A (0.2C)
    Battery Management System 200A
    Max. Continuous Load Power 2560W
    Charge Temperature Range 0℃ to 50℃ / 32°F to 122°F
    Discharge Temperature Range -20℃ to 60℃ / -4°F to 140°F
    Storage Temperature Range -10℃ to 50°C / 14°F to 122°F
    Low Temp Cut-off Protection (Charge) 0℃ ± 4℃ / 32°F ± 7.2°F
    Low Temp Cut-off Protection (Discharge) -20℃ ± 4℃ / -4°F ± 7.2°F

Customer Reviews

Based on 6 reviews
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A
Anonymous
Better than most

Better than most others

A
Anonymous
Great battery

Great quality battery I have 3 of these and they work without flaws. Great Buy.

T
Timothy
So far so good

So far so good ! Currently I've purchased Four (4) of the 12v 300ah batteries for my home backup/solar project, and I'm looking to add 4 more. The quality looks to be good, and the built-in Digital BMS & Info Screen are very handy. The only real complaint I have is that I wish the screens 'orientation' could change so I could mount these in different ways to shorten wire lengths, while still seeing the screen in the proper orientation.

S
Steve Hanley

Great battery, nice lcd screen information

User picture
M
Michael Passino
300 Ah Battery

Love this battery, works as advertised.

12
FAQs

Why choose a 12V 300Ah LiFePO4 battery for long-duration power?
A 12V 300Ah LiFePO4 Battery provides 3,840Wh (3.84kWh) of nominal energy, offering extended runtime for RVs, solar storage, marine equipment, home backup, and off-grid power systems.

How much power can this 12V 300Ah Lithium Battery deliver?
With a 200A BMS, this 12V Lithium Battery supports up to 2,560W of continuous output, making it suitable for higher-power appliances, inverters, and other demanding 12V loads.

What does 12.8V mean on a 12V 300Ah LiFePO4 Battery?
The battery uses four 3.2V LiFePO4 cells connected in series, giving it a 12.8V nominal voltage. It is classified as a 12V battery because it is designed for standard 12V electrical systems.

What charger is compatible with this 300Ah Battery?
Use a charger designed for LiFePO4 batteries. The recommended charging voltage is 14.2–14.6V, with a recommended charging current of 60A (0.2C).

How can I check the battery's condition while it is running?
The built-in LCD touchscreen provides direct access to battery information, while Bluetooth connectivity lets you monitor operating data through the Temgo App, including voltage, current, remaining capacity, and temperature.

Can the 12V 300Ah Lithium Battery handle outdoor environments?
Yes. The battery features an IP65-rated enclosure and vibration-resistant construction, making it suitable for demanding outdoor applications such as RVs, marine use, camping, and off-grid installations.

What temperature range can this 12V Lithium Battery operate in?
The specified discharge temperature range is -20°C to 60°C (-4°F to 140°F), while the charging range is 0°C to 50°C (32°F to 122°F). Low-temperature cutoff protection helps prevent charging or discharging outside the specified limits.

Is a 12V 300Ah Battery suitable for RV and home backup power?
Yes. Its 3.84kWh capacity and 2,560W continuous output make it well suited to RVs, campers, home backup systems, solar energy storage, marine applications, and off-grid power.

How long can this 12V 300Ah LiFePO4 Battery last?
The battery is designed for 5,000+ charge cycles and up to a 10-year service life under suitable operating conditions. Actual lifespan varies with usage, temperature, charging practices, and depth of discharge.

Can I expand my 12V 300Ah battery bank later?
Yes. Multiple 12V 300Ah LiFePO4 Batteries can be connected in series and parallel, with a maximum configuration of 4P4S. This allows you to expand voltage and total energy capacity as your power requirements grow.

Can this 12V 300Ah battery be used with solar panels?
Yes. It can be integrated into compatible solar power systems for energy storage. A suitable LiFePO4-compatible charge controller or charger should be used to manage charging.

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